The oldest or most respected member of a group, especially someone with wisdom and experience; named after a legendary Greek elder.
From Nestor, a character in Homer's Iliad known for his age, wisdom, and eloquent speeches. The name became a generic term for any senior, respected figure in a field.
In ancient Greek stories, Nestor was so old he lived through multiple generations of heroes and kept giving advice—basically the original 'wise elder' archetype that shows up in every fantasy book ever.
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